Relation between Resting State Front-Parietal EEG Coherence and Executive Function in Parkinson’s Disease

Table 3

Relation between EEG alpha coherence in the frontoparietal electrode pair and clinical characteristics in PD patients.

	Low F3-P3 (left side); coherence group	High F3-P3 (left side); coherence group		Low F4-P4 (right side); coherence group	High F4-P4 (right side); coherence group
Age (years)	70.0 (42–87)	61.5 (34–81)		70.5 (42–87)	59.0 (34–76)
≤50	2	4	0.144	1	5	0.002
51–60	7	10		3	14
61–70	13	9		13	9
>70	18	7		17	8
Sex
Male	23	14	0.469	18	19	1.00
Female	17	16		16	17
Disease duration (months)	48 (9–192)	60 (9–228)	0.130	50 (9–192)	60 (9–228)	0.300
HY stage	3.0 (1–5)	2.0 (1–4)
I	3	2	0.464	1	4	0.012
II	15	16		12	19
III	19	9		20	8
IV	2	3		1	4
V	1	0		0	1
Standardized BADS score	85 (46–114)	95 (56–124)	0.032	85 (51–114)	95 (46–124)	0.055
Age-controlled standardized BADS score	89 (54–124)	94 (53–124)	0.063	84 (59–124)	94 (53–124)	0.152

Data are expressed as median (range) or .
BADS: Behavioral Assessment of the Dysexecutive Syndrome; HY stage: Hoehn and Yahr stage; PD: Parkinson’s disease.
The low coherence group had coherence <0.5 and the high coherence group had coherence ≥0.5.
Age, sex, and HY stage were compared across groups using Fisher’s exact test. Disease duration, standardized BADS score, and age-controlled standardized BADS score were compared across groups using the Mann-Whitney test. Statistically significant ().